Some MSI board that had 2x pci-e 16 slots, an XFX 650 PSU, sempron, 1gb DDR3.  I'm waiting on another motherboard, I don't think the video card on top of the binder is going to be a permanent.. it might be if I buy another 5870.... but then I'd need another PSU.  I'm using a Corsair 500 watt to supplement the 650 watt.  I might be able to get away with running the whole system on the 650 watt.. but that is dangerously close... so I might buy a bigger PSU, make the 3x setup permanent, then recycle the 650 into another dual 5870 machine.